Ore-concentrator



(No Model.)

e. F. ESGHWEILBR.

" ORE GONGBNTRATOR.

Patented Sept. 27, 1881.

Wflfzees e6.'

` N. PEfEns. PhuwumgmpnL-f. wasnmgm. D. c.

UNITI-:D STATESY PATENT OFFICE.

CHARLES F. ESCHWEILER, OF HOUGHTON, MICHIGAN.

ORE-CONCENTRATO R.

-SPECIFICA'IION forming part of Letters Patent No. 247,548, datedSeptember 27, 1881,

Application filed May 16, 1881.

To all 'whom it may concern Be it known that-I, CHARLES F. Escnwnr- LER,of Houghton, in the county of Houghton, and in the State of Michigan,havel invented certain new and useful Improvements in Ore-Concentrators; and I do hereby declare that the following is a full,clear, and exact description thereof.

My invention relates to devices for concentrating ore as it falls'fromt-he separator in the form of rich slime,"7 and will be fullydescribedhereinafter.

In the drawings, Figure l is a plan view, Fig. 2 an end view, and Fig. 3a side view, of my device.

A is the frame of my apparatus, and B is the table, which is supportedabove theiframe by a chain, g, and'bar K, and is secured to bar I byeyebolts at f and h. The bar I is pivoted to an arm, H, of swing-post E,and its outer end is braced by an arm, F, and a bracket, F', extendingup from the lower end of the swing-post E.

An arm, G, extending out from the swingpost to a' point almost in thelongitudinal center of the table and beneath it, is connected by a rod,L, with an arm, c, that is securely keyed to a rock-shaft, D. Anothershaft, C, has bearings immediately above the shaft D, and the two areconnected by an arm, d, and the pin e' of crank e, which plays in a slotin arm d. The shaft C is connected with the driving-belt by ashifting-pulley, a, and may carry a ily-wheel, b.

The chute from whence the slime fallslto the table is indicated at l? indotted lines.

I propose to arrange at any convenient point above the table aspray-pipe for discharging.

water into the slime, as shown in dotted lines on the drawings.

Operation: It will be seen by an examination of the drawings that thetable is movably suspended above the frame by means of chain g and barK, and that it is loosely connected by means of eyebolts at j" and h tothe bars or arms I F, and thus it is capable of a swinging and also of atipping motion. Therefore when the shaft C begins to revolve its crank-`pin will act upon the slotted arm d, and forcing it forward will rockthe shaft D,fso as to throwits arm c backward, and as the crankpin c'passes over and beyond the dead-center it will throw the arm d backward,and correspondingly arm c will be thrown forward, and as the crank -pinmoves more slowly when (No model.)

passing over than when passing beyond the dead-center, the arm c will bethrown backward by a jerk and forward by a stead y motion. Now, as thisarm c is connected by the rod L and arm G with the swing-postE, it willrecipro-4 cate the post E on an arc of a circle, and through it impart alike motion to the table, which, as it is swung forward, will be tippedby the shortening of chain g, as shown indotted lines in Fig. l. Thetable having been covered with slime, the forward thrust of it will tendto throw the heavier particles (which are generally the richest)forward-that is, to the left in the plan view shown in Fig. l-toward theupper left-hand corner of the table shown in said plan, while thelighter particles will be washed down to the lower left-hand "corner, asshown in said plan, and thus as the table is reciprocated in thedirection indicated by dotted lines, the heavier particles will beconcentrated in one corner to be crowded over into any suitablereceptacle for them, and the lighter or demetallized particles will bewashed off at the other corner.

The chain g may be adjusted by a handwheel, J, and secured by aratchet-wheel and pawl, as shown.

WbatI claim as my invention, and desire to secure by Letters Patent, is-

l. In an ore-concentrator. the combination, with the shaking table, ofthe arm l, to which it is movably secured, the chain g, and ashakingmechanism, as set forth.

2. The combination of swing-post having arms for supporting andcommunicating its motion to the table, and an arm, G, with thedriving-shaft C, rock-shaft D, and connecting mechanism, whereby theshaft D is rocked by the shaft U, and the swing-post is, in turn, reciprocated by shaft D, as set forth.

3. The combination of swing-post having arms F and H with the arm I, towhich the table is movably secured, and a movable support, g, adapted totip the table as it is thrown forward.

4. The combination of shafts C and D, rod L, swing-post having arm G,and the shaking table, as set forth.

In testimony that I claim the foregoing I have hereunto set my handthislth day of April, 1881.

GHAS. F. ESCHWEILER.

Witnesses STANLEY S. SToUT, HAROLD G. UNDERwooD.

IOO

